High Quality Materials:Bucklos bike crank arm set is forged from premium aluminum alloy, which is more sturdy and reliable, extending the service life of the product Size&Interface Type:This crank has two interface types, square hole and diamond hole, each with two sizes of 152MM/170MM to choose from. You can choose a single left or a pair of crank arms according to your needs Easy To Install:The bicycle crank arm features standard precision hole cutting to ensure a perfect fit for your bike. Easy to install, no need for too many installation tools Wide Application:Bucklos bicycle crankarm is a nice replacement for bike repair suitable for the ebike,mountain bike,folding bike,fixed gear bike,exercise bike,etc Notes:Before purchasing, please confirm whether the style of the crank arm interface is square or diamond hole, as well as the size of the crank. A pair of crank arms can only be used for electric bicycles

Bucklos Crank  Arm

Brand：Bucklos

Bike Type：Univeral （Ebike,MTB, BMX,hybrid bike, road bike,old school, beachcruiser,  folding Bike, track Bike)

Length:152/170MM

Material:Aluminum alloy

Thread Size:9/16 inch

Package Includes:Only Left Crank Arm